Fiber compatible fast acousto-optic modulator using a gradient index lens as the interaction medium Academic Article uri icon

abstract

  • A novel fiber‐compatible acousto‐optic modulator is described in which the interaction between the optical and acoustic waves occurs in a graded‐index lens which can also function as an ‘‘expanded‐beam’’ fiber‐to‐fiber connector in the case of a half‐pitch device, or as a collimator in the case of a quarter‐pitch device. Initial results using a quarter‐pitch lens are diffraction efficiences of 3%, and diffraction loss of 7%, using 0.5 W power of 80 MHz rf under cw operation and under pulsed operation, using pulse widths down to 40 ns. A 14 ns switching time was measured.

publication date

  • January 1, 1993